For what value(s) of does the following system possess a unique solution

MATHEMATICS · Subjective · CBSE · Mathematics · Determinants · Determinants

Problem

For what value(s) of kk does the following system possess a unique solution? x+y+z=3x+y+z=3, 2x+ky+5z=122x+ky+5z=12, 3x+4y+kz=193x+4y+kz=19.

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